CVE-2017-16840: Debian Linux

Critical severity, CVSS 9.8. EPSS: 3.3% chance of exploitation in the next 30 days.

The VC-2 Video Compression encoder in FFmpeg 3.0 and 3.4 allows remote attackers to cause a denial of service (out-of-bounds read) because of incorrect buffer padding for non-Haar wavelets, related to libavcodec/vc2enc.c and libavcodec/vc2enc_dwt.c.

Affected products

• Debian Debian Linux: version 9.0 only
• Ffmpeg Ffmpeg: version 3.0 only; version 3.4 only

Published 2017-11-21. Last modified 2026-06-17.